Brush



C. E. JEWETT AND F. FITZGERALD.

BRUSH.

APPLICATION FILED NOV. 26, 1920.

Patented Nov. 22, 1921.

Q7474 INVENTORS yg a my.

chimes a. maria, trader's:

PATENT OFFICE..-

paves, mm remnant. imitation,

Specification of Letters Patent.

Application filed November 26, 1920. Serial No. 426,557. 7

To, all whom it may concern: y 1 7 Be it known that we, GHA'Rnns E. JEWETT and FRED FITZGERALD, citizens of the United States, residing at North Andover ,and Lawrence, respectively, in the county of Essex and State of Massachusetts have invented certain new andusefullmprovements in Brushes, of which the following is a soecification. .v Y ur invention relates to brushes, and is especially useful with what are known as dabbing brushes such as are used with combing machines, or any other type of bristle brush wherein certain sections of the bristles wear out more rapidly than other sections.

In making and repairing bristle brushes, it is desirable to use machines such as Liebig filling machines, by which a staple looped around a tuft of bristles is passed through a hole in a bristle block, so called, and forced into a plug therein or into a staple block behind it.

In dabbing and similar brushes, these holes are close together and the holes are likely to be enlarged while being filled, while the plugs or the staple block are rapidly chewed up as the brush is repaired by pulling and driving staples.

Our construction consists essentially of a bristle block made of metal, preferably aluminum or some alloy similar to aluminum, having a plurality of bristle holes from face to back, and behind this a plurality of staple blocks instead of one staple block or instead of plugs, preferably made of leather, cork, or other penetrable material which will not'split when staples are driven into it.

Preferably also there is a back plate of Fig. 2 is a perspective view showing the,

bottom or inside of the back plate.

Fig. 3 is a top or inside view of a bristle block having bristle holes and a rim embodying our construction.

F1g. 4 1s a perspective View with part I extend entirely brokenaway, showing our :bristle'blockqwith 1ts recess filled 'wlth a plurality of staple blocks. I I I q r Fig. 5 a perspective view of part of a brush of a modified construction.

Patented Nov. 252",

Fig. 6 is a sectional elevation on theline 6-6 of Fig. '1. r

B represents the bristleblockhaving a substantially fiat'face and back in which is a recess 20 formed by a rim 21 which extends all the; way around. It also has suit able screw holes 22 and 23. From the face to the recess at the back are a plurality of bristle holes 2 1, each adapted to receive a tuft of bristles, such as C, which is looped around a staple, such as 25. These holes 24 through and are the same size throughout.

In the back of the bristle block B, preferably in the back recess 20 thereof, we place a plurality of staple blocks suchas 30 and 31 which are preferably made of sole leather, wood, or other material adapted to have driven into it the staples 25 to retain tufts of bristles.

lVe can have-two staple blocks of a shape such as shown at 30 and 31, or more, as shown by the dotted lines in Fig. 4, if it is desired; The staple blocks may be in a single layer or in two layers, as preferred. Preferably these staple blocks are so arranged that one or more will include. the parts of the brush which wear most rapidly so that when it is desired to renew the tufts of bristles from that section, the appropriate staple block can be removed and replaced by a new one which will firmly hold new staples.

l/Ve prefer to hold the bristle blocks. and

staple blocks together by placing back of them, resting on the rim 21, a back plate A shown as of the same shape and having a slot'lO, by which it is attached to-the machine, and recesses 11 to give it strength and lightness. It also has threaded screw holes 12 and 13 through which and through holes 22 and 23 the screws 42 and 43 pass, thereby holding the back plate and bristle block, with the inclosed staple blocks, together. These screws also pass through holes 32, 32, 33, 33, in the staple blocks.

In Fig. 5 we show a brush which may or. may not be a dabbing brush, having abristle block F with bristles C in the front or face of which are bristle holes similar to 24 to receiye bristles and staples. showmthese staples are driven'into anyone of a plurality of staple blocks, such as 50 and 51, which;

may be of leather or, preferably, ofwoo'd.

In this construction there is no backplate, but the bristle block and staple block are held together by means of screwssuch as 52, 52.

VIn a dabbing brush, we prefer to use leather, but with a brush such as shown in Fig. 5, wood or some more rigid material is preferable. In'any case where the bristle block is not recessed or where a back plate is not used, a rigid penetrable material is preferable. 4 1

VVeclaim: 1. In a dabbing brushfor combing ma chines, the combination of a bristle block formed-witha recess" and a plurality of bristle holes extending from one face thereof to-said recess, each hole being provided with a tuft o f bristles, a plurality of staple blocks of penetrable material in saidrecess,

'staples driveniin saidblocks and engaging the bristle tufts to retain the same in the holes in the bristle block and a backing plate extending over the backs of the staple blocks and secured to the bristle block.

2. In a dabbing brush for combing machines, the combination of a bristle block formed with a plurality of bristle holes extending from the fronteface' thereof to the back face, each holeb'eing provided with a tuft of bristles, a plurality of staple blocks of penetrable material whichrest against said back face, staples driven in said blocks and engaging the bristle tufts to retain the same in the holes in the bristle block, and

means to-hold the staple blocks and the bristle block together.

' CHARLES EVJEWETT.

- FRED FITZGERALD. 

